KR20140062213A - Apparatus and method for processing eyeglass lens - Google Patents

Apparatus and method for processing eyeglass lens Download PDF

Info

Publication number
KR20140062213A
KR20140062213A KR1020120128555A KR20120128555A KR20140062213A KR 20140062213 A KR20140062213 A KR 20140062213A KR 1020120128555 A KR1020120128555 A KR 1020120128555A KR 20120128555 A KR20120128555 A KR 20120128555A KR 20140062213 A KR20140062213 A KR 20140062213A
Authority
KR
South Korea
Prior art keywords
lens
cutter
end milling
milling cutter
clamp
Prior art date
Application number
KR1020120128555A
Other languages
Korean (ko)
Inventor
김현주
Original Assignee
주식회사 휴비츠
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 휴비츠 filed Critical 주식회사 휴비츠
Priority to KR1020120128555A priority Critical patent/KR20140062213A/en
Publication of KR20140062213A publication Critical patent/KR20140062213A/en

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C3/00—Milling particular work; Special milling operations; Machines therefor
    • B23C3/02—Milling surfaces of revolution
    • B23C3/023—Milling spherical surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/25—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
    • B26D1/26—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis substantially perpendicular to the line of cut
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/01—Means for holding or positioning work
    • B26D7/02—Means for holding or positioning work with clamping means

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)

Abstract

Disclosed are an apparatus and a method for processing an eyeglass lens, which can obtain a desired shape of an eyeglass lens by removing the edge of a circular lens. The apparatus for processing an eyeglass lens comprises a pair of clamps to which a lens is fixed and mounted; a clamp operating part for rotating and moving the clamp and the lens mounted to the clamp; and an end milling cutter part which comes into contact with the side of the lens throughout the entire thickness (d) of the side of the lens and cuts the side contact portion of the lens at a time along a processing trace to cut unnecessary parts of the edge of the lens and thereby separate the unnecessary parts of the edge of the lens from the eyeglass lens part of the central part of the lens.

Description

[0001] Apparatus and method for processing eyeglass lenses [0002]

The present invention relates to a spectacle lens processing apparatus and method, and more particularly, to a spectacle lens processing apparatus and method for processing an eyeglass lens into a desired shape by removing edges of a circular lens.

In order to manufacture a spectacle lens, a commercially available circular lens (usually called a blank lens) should be processed into a shape of a desired spectacle lens, for example, a shape of an eyeglass frame. 1 is a view showing a process of processing a circular lens using a conventional diamond wheel. 1, a diamond wheel 20 rotating by a motor 22 is mounted on a patternless edger, and a circular lens 10 fixed to a clamp 24 is mounted on the diamond wheel 20 20). The clamp 24 serves as a rotating and moving shaft for rotating (R direction) or moving (Y direction) the lens 10 in the lens processing machine. The lens processing machine moves the clamp 24 in the direction of the diamond wheel 20 (arrow direction in FIG. 1, Y direction) to cause the lens 10 to contact the rotating diamond wheel 20, (Grinding) the portion of the lens 10 abutting against the lens 20. By performing the above polishing process on the entire circumference of the lens 10 while rotating the lens 10, the lens 10 can be processed in a desired shape. A lens fixing tape 26 is attached to one surface or both surfaces of the lens 10 so as to firmly couple the clamp 24 and the lens 10 in the lens processing, After attaching the block 28, the clamp 24 is attached to the lens securing block 28.

Polishing of the lens 10 using the diamond wheel 20 removes unnecessary portions of the periphery of the lens 10 by polishing and thus requires a long time to polish the lens 10 and a large amount of lens powder is generated The working environment is deteriorated and the pressure applied from the diamond wheel 20 to the lens 10 is large so that the lens 10 slips off the lens fixing block 28 and is easily detached. On the other hand, when water repellent coating is applied to the surface of the lens 10 to prevent scratches or adhesion of water or moisture to the lens 10, the surface of the lens 10 becomes smoother, The friction between the lens fixing tape 26 and the lens fixing block 28 is reduced, so that the lens 10 is more likely to be slipped.

Therefore, recently, unnecessary edge portions of the circular lens 10 are cut and removed by using a cutter blade milling method (first roughing, roughing edging), and then the remaining lens portion is ground with a diamond wheel Method (secondary precision machining) is used. FIG. 2 is a view showing a process of processing a circular lens using a conventional cutter blade milling method, and FIG. 3 is a front view (A) and a side view (B) of a lens processed by a conventional cutter blade milling method. As shown in Figs. 2 and 3, in the conventional cutter blade milling method, a cutting edge is formed in the front (operation direction end) by being driven to rotate by the motor 32, A face milling cutter 30 is formed on the front surface of the lens 10 in the form of a drill. The lens 10 is fixed at a predetermined position and the motor 32 and the cutter 30 are moved to the surface of the lens 10 , The lens 10 is polished shallowly to form a groove 10a having a shallow depth (first depth, for example, 0.25 mm depth) in the lens 10. At the same time, by moving the clamp 24 or the cutter 30 fixing the lens 10 in the Y or Z direction along the processing locus 12, 14 (see A in Fig. 3) of the lens 10, The grooves 10a of the first depth are continuously formed along the machining locus 12,

After the grooves 10a having the first depth are formed in this manner, the cutter 30 further moves toward the lens 10, and the grooves 10a having the first depth formed in the lens 10 are again moved to the shallow depth And the cutter 30 is moved again along the machining locus 12 and 14 so that the lens 10 is fixed to the lens 10, Grooves 10b of a second depth are formed along the machining locus 12, In the conventional cutter blade milling method, the grooving process is repeatedly performed three to ten times to continuously process the lens 10 at a predetermined depth (10a, 10b, 10c, etc.) An incision is formed along the lenses 12 and 14 so that the unnecessary portion 18 at the edge of the lens 10 is cut off from the spectacle lens portion 16. 3, the machining locus for cutting the unnecessary portion 18 at the edge of the lens 10 has a circular machining locus 12 slightly larger than the shape of the desired spectacle lens (indicated by a dotted line in Fig. 3) Or may be a straight-line processing locus 14 extending radially from the shape of the spectacle lens. As described above, the use of both the circular machining locus 12 and the straight machining locus 14 is preferable because unnecessary portions 18 at the edge of the lens 10 are removed in a state of being separated into several pieces.

However, in order to separate the spectacle lens portion 16 at the central portion from the unnecessary portion 18 at the edge by using the conventional cutter blade milling method, it is necessary not only to repetitively perform complicated milling work several times, A feeling work for detecting the thickness of the lens 10 must also be performed, which requires a long working time. The cutter 30 or the lens 10 must be moved repeatedly along the circular or straight machining locus 12 or 14 in order to form a circular cut or straight cut. Vibration of the cutter blade mechanism is liable to occur due to repetitive movement of the cutter blade mechanism 10, and the cutter blade mechanism is liable to be damaged or deformed for a long period of time.

SUMMARY OF THE INVENTION An object of the present invention is to provide an apparatus and a method for processing a spectacle lens that can solve the disadvantages of the grinding process using a diamond wheel and the cutting method using conventional cutter blade milling.

Another object of the present invention is to provide a spectacle lens processing apparatus and method which can effectively separate and remove unnecessary edge portions of a circular lens in a short time.

It is still another object of the present invention to provide a spectacle lens processing apparatus that minimizes mechanical load or vibration and has a mechanically stable structure.

According to an aspect of the present invention, there is provided a clamping apparatus comprising: a pair of clamps to which a lens is fixedly mounted; A clamp driving unit for rotating and moving the clamp and the lens mounted on the clamp; And a total thickness (d) of the lens side, the contact portion of the lens side surface is cut at a time along a processing locus for contacting the side surface of the lens and cutting an unnecessary portion of the lens edge, And an end milling cutter portion for separating an unnecessary portion of the edge of the lens from an unnecessary portion of the lens edge.

The present invention also provides a method of manufacturing an end milling cutter, comprising: contacting a side surface of a circular lens to a side surface of an end milling cutter having a cutting edge at both ends and sides; And separating an unnecessary portion of the lens edge portion of the lens and a lens edge portion of the lens center portion by cutting the lens at once along the processing locus of the lens using the cutting edge on the side surface of the cutter to provide.

According to the spectacle lens processing method of the present invention, unnecessary edge portions of the circular lens can be effectively separated and removed in a short time. Further, the spectacle lens processing apparatus according to the present invention has a mechanically stable structure by minimizing mechanical load or vibration.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a process of processing a circular lens using a conventional diamond wheel. FIG.
2 is a view showing a process of processing a circular lens using a conventional cutter blade milling method.
3 is a front view (A) and a side view (B) of a lens processed by a conventional cutter blade milling method.
4 is a view showing a structure of a spectacle lens processing apparatus according to an embodiment of the present invention.
5 is a front view (A) and a side view (B) of a lens that is processed by the spectacle lens processing method according to the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. In the accompanying drawings, elements having the same or similar functions as those of the conventional art are denoted by the same reference numerals.

FIG. 4 is a view showing a structure of a spectacle lens processing apparatus according to an embodiment of the present invention, and FIG. 5 is a front view (A) and a side view (B) of a lens processed by the spectacle lens processing method according to the present invention . 4 and 5, the spectacle lens processing apparatus according to the present invention includes a pair of clamps 24 to which a lens 10 is fixedly mounted, a clamp 24, A clamp driving section 40 for rotating and moving the lens 10 and a driving section 40 for driving the lens 10 in a state in which it contacts the side surface of the lens 10 over the entire thickness d of the side surface of the lens 10, The contact portion on the side of the lens 10 is cut at one time along the processing locus 12 or 14 for cutting the lens 18 and the lens 10 and the lens 10, And an end milling cutter part (50) separating the unnecessary part (18) of the edge.

The pair of clamps 24 is a conventional means for fixing the lens 10 in the lens processing machine for processing the lens 10. Preferably, as shown in Fig. 4, a pair of rotary shafts 24 positioned to face each other as the pair of clamps 24 can be used. The pair of rotary shafts 24 move in the axial direction (X direction) so that the distance between the pair of rotary shafts 24 can be adjusted. The lens 10 is positioned between the rotating shafts 24 and the distance between the rotating shafts 24 is narrowed so that the lens 10 is held between the rotating shafts 24 Can be fixed. At this time, in order to firmly connect the clamp 24 and the lens 10, a lens fixing tape 26 may be attached to one or both surfaces of the lens 10, After attaching the block 28, the clamp 24 can be coupled to the lens securing block 28.

The clamp driving unit 40 is also a conventional means for rotating and moving the clamp 24 and the lens 10 fitted to the clamp 24. The clamp driving unit 40 includes a motor (not shown) for rotating the clamp 24 in the R direction and moves in each direction (X, Y, Z direction) 10 can be adjusted. Therefore, the clamp driving unit 40 can move the lens 10 in a straight line (X, Y, Z direction) to a desired position by rotating the lens 10 (R direction). The configuration and operation of the pair of clamps 24 and the clamp driving unit 40 are disclosed in detail in, for example, Patent Registration No. 10-0645779 of the present applicant, .

The end milling cutter 50 cuts the lens 10 at a time in the thickness direction to separate the spectacle lens portion 16 at the central portion of the lens 10 from the unnecessary portion 18 at the edge of the lens 10 Device. The end milling cutter unit 50 includes an end milling cutter 54 (hereinafter simply referred to as a cutter) for cutting the lens 10 and a cutter driving unit 52 for rotating the cutter 54 . The cutter 54 has cutting teeth at both the ends of the cutter 54 and on the sides of the cutter 54 in contact with the side of the lens 10. When the cutter 54 advances toward the object to be cut, similarly to the drill, a through hole is formed in the object by a cutting edge formed at the end of the cutter 34 (plane machining). On the other hand, when the object comes into contact with the side surface of the rotating cutter 54, the object is cut by the cutting edge formed on the side surface of the cutter 34 (side processing) similarly to the saw.

The cutter 54 of the end milling cutter portion 50 contacts the side surface of the lens 10 over the entire thickness d of the side surface of the lens 10 as shown in Fig. Specifically, in an embodiment of the present invention, the clamp 24 and the lens 10 are moved to a predetermined position on the surface of the lens 10, for example, a point on the circular machining locus 12 When the cutter 54 and the lens 10 are in contact with each other (see A in Fig. 5) and the lens 10 continues to move in the direction of the cutter 54 at the position P1 in Fig. 5, A through hole 5 is formed in the lens 10 and a cutter 54 is fitted in the through hole 5. The side surface of the lens 10 is in contact with a cutting edge formed on the side surface of the cutter 54 . At this time, when the lens 10 is moved along the circular machining locus 12, a cutting edge formed on a side surface of the cutter 54 passes through the lens 10 while polishing the side surface of the lens 10 , The lens 10 is cut along the circular machining locus 12. That is, in this embodiment, the distal end of the cutter 54 is brought into contact with one surface of the lens 10, the lens 10 is moved in the direction of the cutter 54 by the thickness of the lens 10, The lens 10 is cut at one time along the circular machining locus 12. Therefore, the spectacle lens portion 16 at the center portion of the lens 10 and the unnecessary portion 18 at the edge of the lens 10 are separated by the cutting process at a time.

5A, the lens 10 is moved so that the lens 10 is moved from one point P2 on the outermost edge of the lens 10 to the other end of the lens 10. In this case, The lens 10 side and the cutter 54 side are brought into direct contact with each other over the whole thickness d of the side surface and moved radially along the straight line processing locus 14 to the point P1 of the circular processing locus 12 The spectacle lens portion 16 at the center of the lens 10 and the unnecessary portion 18 at the edge of the lens 10 can be separated by cutting the lens 10 along the circular machining locus 12 . The cutter 54 and the lens 10 are brought into contact with each other at an arbitrary first position on the side of the lens 10 so that the cutter 54 passes through the inside of the lens 10, (For example, P2 -> P1 - > P3 - > P4 points) in order to allow the cutter 54 to exit the lens 10 from any arbitrary second position on the side of the lens 10, It is possible to partially remove the unnecessary portion 18 of the substrate. In this way, when the side surface of the lens 10 and the side surface of the cutter 54 are in direct contact, the process of forming the through hole 5 of the lens 10 by the cutter 54 may be omitted.

In the present invention, the processing of the lens 10 using the end milling cutter 50 may be performed while moving the end milling cutter 50 while the lens 10 is fixed, The lens 10 fitted to the clamp 24 moves (linearly or rotationally moves) in contact with the end milling cutter portion 50 in a state where the milling cutter portion 50 is fixed at a predetermined position, It is preferable that the side surface of the lens 10 is cut by the rotating cutter 54 of the milling cutter portion 50. [ Since the end milling cutter portion 50 which is a relatively small structure can be fixed by cutting the lens 10 while moving the lens 10 and the clamp 24 as described above, Can be increased, and the mechanical load or vibration can be minimized.

4, the cutter 54 is fixed to the clamp 24 so as to be substantially perpendicular to the surface of the lens 10 having a predetermined curvature, , For example, 2 to 20 degrees, preferably 5 to 15 degrees, with respect to the rotation axis of the lens 10, as shown in Fig. When the cutter 54 is positioned so as to be inclined at a predetermined angle in this way, the through hole 5 can be formed perpendicularly to the surface of the lens 10 having a predetermined curvature, can do.

Next, with reference to Figs. 4 and 5, a spectacle lens processing method according to the present invention will be described. In order to process the spectacle lens according to the present invention, the side surface of the circular lens 10 is brought into contact with the side surface of the end milling cutter 54 having the cutting edge on both the end and the side surfaces. The contact between the side surface of the lens 10 and the side surface of the cutter 54 is performed by forming the through hole 5 through the lens 10 using a cutting edge at the end of the cutter 54, 10) side surface of the cutter 54 directly. Next, the lens 10 is cut at one time along the processing locus 12, 14 of the lens 10 by using the cutting edge on the side of the cutter 54, 16 and the unnecessary portion 18 of the edge of the lens 10 are separated.

According to the spectacle lens processing method of the present invention, since the lens is rough-edged by using the end milling cutter portion 50 without using a roughing wheel for rough machining, It is possible to prevent the lens 10 from separating from the clamp 24 by reducing the pressure to reduce the generation amount of the lens powder at the time of processing the lens 10 and to remarkably shorten the processing time of the lens 10 .

Claims (7)

A pair of clamps to which a lens is fixedly mounted;
A clamp driving unit for rotating and moving the clamp and the lens mounted on the clamp; And
The contact portion of the lens side surface is cut at one time along the processing locus for contacting the side surface of the lens and cutting an unnecessary portion of the lens edge over the entire thickness d of the lens side surface, And an end milling cutter part for separating an unnecessary part of the lens edge. The lens processing apparatus according to claim 1, wherein the lens processing using the end milling cutter portion is performed by moving the lens sandwiched by the clamp and contacting the end milling cutter portion with the end milling cutter portion fixed at a predetermined position And a spectacle lens processing device. The end milling cutter according to claim 1, wherein the end milling cutter portion includes an end milling cutter for cutting a lens and a cutter driving portion for rotating the cutter, wherein the cutter is cut at both ends of the cutter and at a side of the cutter, And a blade is provided. 4. The end milling cutter according to claim 3, wherein the contact between the cutter side surface and the lens side surface of the end milling cutter portion is such that the cutter and the lens come into contact with each other at a predetermined position of the lens surface, the lens continues to move in the cutter direction, And a cutter is fitted in the through hole, so that the lens side surface and the cutting edge formed on the side surface of the cutter come into contact with each other. 4. The end milling cutter according to claim 3, wherein the contact between the cutter side surface and the lens side surface of the end milling cutter portion is such that, at any point of the outermost edge of the lens, Wherein said lens is a lens. The spectacle lens processing apparatus according to claim 3, wherein the cutter is positioned so as to be inclined by 2 to 20 degrees with respect to the rotation axis of the lens so as to be substantially perpendicular to the lens surface having a predetermined curvature. Contacting a side surface of a circular lens to a side of an end milling cutter having a cutting edge at both ends and sides; And
And separating the spectacle lens portion at the center of the lens and the unnecessary portion of the lens edge by cutting the lens at one time along the processing locus of the lens using the cutting edge on the side of the cutter.
KR1020120128555A 2012-11-14 2012-11-14 Apparatus and method for processing eyeglass lens KR20140062213A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020120128555A KR20140062213A (en) 2012-11-14 2012-11-14 Apparatus and method for processing eyeglass lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020120128555A KR20140062213A (en) 2012-11-14 2012-11-14 Apparatus and method for processing eyeglass lens

Publications (1)

Publication Number Publication Date
KR20140062213A true KR20140062213A (en) 2014-05-23

Family

ID=50890534

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020120128555A KR20140062213A (en) 2012-11-14 2012-11-14 Apparatus and method for processing eyeglass lens

Country Status (1)

Country Link
KR (1) KR20140062213A (en)

Similar Documents

Publication Publication Date Title
JP2009233794A (en) Grinding/polishing machine for silicon block, and method of working silicon wafer
EP1955811A3 (en) Processing centre
KR101713523B1 (en) Apparatus and method for processing circumference of eyeglass lens
JP2013220503A (en) Groove machining method and mirror finishing method on film-like workpiece by flycutting
KR20140062213A (en) Apparatus and method for processing eyeglass lens
US8317571B2 (en) Grinding assembly for glass slabs and grinding head for a rectilinear grinding machine equipped with such assembly
JP2008183715A (en) Specular working method for end surface of workpiece and specular working device
KR101394226B1 (en) Method for processing eyeglass lens
KR101610000B1 (en) Method for processing eyeglass lens
JP2015521959A (en) Chamfering / Beveling Tool-Router Head for Metal
KR101405838B1 (en) Apparatus and method for processing eyeglass lens by milling cutter
JP5290084B2 (en) Grinding equipment
JP2009269379A (en) Lumber cutting device
JP2002086325A (en) Precision vise
JP4122127B2 (en) Wheel grooving device
KR101887015B1 (en) Apparatus for processing edge of eyeglass lens
JP6388518B2 (en) Workpiece polishing method
KR101869688B1 (en) Apparatus for gridning inner diameter surface of housing
JP2003136385A (en) End face machining method and device
KR101887016B1 (en) Method for processing edge of eyeglass lens
JP6959117B2 (en) Machining tools, machining equipment and machining methods
KR20180068923A (en) Apparatus for gridning inner diameter surface of housing
JP2006088313A (en) Gear formation cutter
JPH03221366A (en) Follow-up mount and mechanical stopper
JP5514642B2 (en) Grinding wheel and flank forming method for abrasive grains

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E601 Decision to refuse application